From my father's prayerbook

Act of Reparation to the Sacred Heart of Jesus

O Sweetest Jesus, Whose overflowing charity for men is requited by so much forgetfulness, negligence and contempt, behold us prostrate before Thy altar, (if said elsewhere, in Thy presence) eager to repair by a special act of homage the cruel indifference and injuries, to which Thy loving Heart is everywhere subject.

Mindful, alas, that we ourselves have had a share in such great indignities, which we now deplore from the depths of our hearts, we humbly ask Thy pardon and declare our readiness to atone by voluntary expiation not only for our own personal offenses but also for the sins of those, who, straying far from the path of salvation, refuse in their obstinate infidelity to follow Thee, their Shepherd and Leader, or, renouncing the vows of their baptism, have cast off the sweet yoke of Thy Law.

We are now resolved to expiate each and every deplorable outrage committed against Thee; we are determined to make amends for the manifold offenses against Christian modesty in unbecoming dress and behaviour, for all the foul seductions laid to ensnare the feet of the innocent, for the frequent violation of Sundays and holy days, and the shocking blasphemies uttered against Thee and Thy saints.  We wish also to make amends for the insults to which Thy Vicar on earth  and Thy priests are subjected, for the profanation, by conscious neglect or terrible acts of sacrilege, of the very Sacrament of Thy divine love; and lastly for the public crimes of nations who resist the rights and the teaching authority of the Church which Thou hast founded.

Would, O divine Jesus, we were able to wash away such abominations with our blood.  We now offer, in reparation for those violations of Thy divine honour, the satisfaction Thou dist once make to Thy eternal Father on the Cross and which thou dost continue to renew daily on our altars; we offer it in union with the acts of atonement of Thy Virgin Mother and all the Saints and of the pious faithful on earth; and we sincerely promise to make recompense, as far as we can with the help of Thy grace, for all the neglect of Thy great love and for the sins we and others have committed in the past.Henceforth we will live a life of unwavering faith, of purity, of conduct, of perfect observance of the precepts of the gospel and especially that of charity.We promise to the best of our power to prevent others from offending Thee  and bring as many as possible to follow Thee.

O loving Jesus, through the intercession of the Blessed Virgin Mary, our model in reparation, deign to receive the voluntary offering we make of this act of expiation; and by the crowning perseverance keep us faithful unto death in our duty and the allegiance we owe Thee, so that we may all one day come to that happy home, where Thou with the Father and the Holy Spirit livest and reignest God, world without end,

Amen.